Howard's roommate, 27-year-old Korena Inglis, was wounded in the shooting. An arrest-warrant affidavit said she was sleeping in her bedroom when a man came in, got on top of her and punched her in the head repeatedly.

The man threw Inglis off the bed and shot her before he left the room, the affidavit said.

After he left, she locked herself in the bathroom and texted a friend named "Goochie" at 1:29 p.m., saying "come over now ... we getting shot up," police wrote in the affidavit.

Inglis also texted her mother and sister about the shooting, and her sister called 911 at 2 p.m. Family members came to pick up Inglis and flagged down a police officer for help. When officers arrived, they found Howard dead from a gunshot wound.

Inglis was taken to a hospital with a wound that wasn't life-threatening, police said.

The same phone number Inglis saved as "Goochie" was saved in one of Howard's phones as "Guccie," according to the affidavit. The last call Howard had received was from that number at 12:41 p.m., police said. That number matched a profile on Facebook Messenger for Myles, according to the affidavit.

Whaylon Jessie Howard Jr.

(Dallas Police Department)

The roommate told police that the man she knew as "Goochie" was close to Howard.

Surveillance footage of Howard's home shows Myles and the other suspect walking in at 1:05 p.m., then walking out at 1:27 p.m.

Myles was holding what police described as an assault rifle when he left the house, according to the affidavit. Inside the house, police found three loaded AR-15 magazines, as well as drug paraphernalia, but no AR-15.

Police said the two men stole the firearm and possibly other property and killed Howard while doing so.

In 2014, Myles pleaded guilty to an assault charge for kicking a paramedic who was trying to restrain him after he got into a drunken-driving wreck, according to court documents. He was sentenced to just under a year in the county jail and had to write the paramedic an apology letter.